Dear All,
If all of service ( include Firewall ) in the same server, and the server use Private IP and connection with Router / HUB... Then, how to define the NAT ( iptable function ) to transfer the IP Address ( Public <-> Private ) and auto assign the IP range for Client PCs ( LAN users ) ? Is there an simple sample for reference ?
eg : For Public IP ( from ISP ) : IP range : 202.175.123.123 ~ 202.175.123.129 ( I want to assign IP 123 for the Server first ) subnet mask : 255.255.255.240 Router IP : 202.175.123.128
For Private IP ( All of Server under LAN environment ) : IP : 192.168.0.1 ( I want to tranfer to 202.175.123.123 ) subnet mask : 255.255.255.0 ( I want to tranfer to 255.255.255.240 ) Router IP : 192.168.0.254 ( I want to tranfer to 202.175.123.128 )
For Client IP ( via NAT + DHCP of the Server ) : Ip : 192.168.1.1 ~ 192.168.1.50
Edward.